The function of the lamp seems to be good at first glance. In normal use, certainly very commendable. Equal first: I have 3 of these lamps, 2 after 2 years already defective. The service, however (Exchange or even withdrawal of money refund) exemplary. The other problem: not suitable for small spaces. The sensor goes through doors and turns on the lamp. If one it less, it stops responding to the children. The then run in the dark. If one him more sensitive, the lamp goes on even when the dog is at the door passes. Even through the window sensor reacts, but that is usually undesirable. As much something should be done. Heat sensors (infrared sensors) are better for smaller spaces.